Flintstone, MD · standard
ZIP Code 21530
Allegany County, Maryland - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 1,591
- 11/sq mi Low-density area
- $63,542
- Median income Near-median income area
- $202,400
- Median home value Near-median home value
- 21.2%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
Flintstone pairs a below-median household income with below-median home values, in a rural, homeowner-dominated area.
- 36th pct
- household income, US ZIPs
- 44th pct
- home value, US ZIPs
- 11
- people per sq mi
- 83%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 21530 against every reporting US ZIP.
ZIP code 21530 covers 146.0 square miles in Flintstone, Allegany County, Maryland (a standard USPS delivery area), with a modest 1,591 residents on file, a density of 11 people per square mile, in the New York time zone.
ZIP 21530 reports a modest median household income of $63,542 (44% below the average Maryland ZIP), while per-capita income is $32,301. Unemployment is 17.0%, an important qualifier alongside the household-income figure. Home values sit below the statewide ZIP benchmark: the median is $202,400 (55% below the average Maryland ZIP), and median rent is $828; owner occupancy is 82.7%.
Educational attainment sits below the national norm: 21.2% of adults hold a bachelor's degree or higher, the median age is 56, and the average commute is -. The page also surfaces 4 ZIP codes within roughly 10 miles and 6 more in Allegany County, so 21530 can be compared with both its immediate and county-level context.
Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →
Top industries in ZIP 21530
Top 5 sectors by establishment count in Flintstone, MD
Which industries have the most business establishments in ZIP 21530.
- Transportation and warehousing
Transportation and warehousing
4 establishments
- Construction
Construction
3 establishments
- Retail trade
Retail trade
3 establishments
- Administrative and support and waste management and remediation services
Administrative and support and waste management and remediation services
3 establishments
What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 21530, Flintstone, MD · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.
Quick Facts
1,591
Population
146.0
Area (sq mi)
11
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 21530?
56.0
Median Age
52.6%
Male
47.4%
Female
0.0%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$63,542
Median Household Income
-44% vs state ZIP avg
$32,301
Per Capita Income
18.5%
Poverty Rate
17.0%
Unemployment Rate
How ZIP 21530 ranks among Maryland ZIPs
Flintstone, MD household income vs. every Maryland ZIP code
Median household income among 419 reporting Maryland ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$63,542 10th percentile higher than 10% of 419 Maryland ZIPs
Each bar is a $20K-wide band; taller bars hold more Maryland ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
940housing units
940
Total Housing Units
648
Occupied Units
292
Vacant Units
2.16
Avg Household Size
Occupancy Type
$202,400
Median Home Value
-55% vs state ZIP avg
$828
Median Rent
1971
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 19 business establishments in ZIP 21530, employing approximately 541 people with a combined annual payroll of $20,563,000.
19
Businesses
541
Employees
$20.6M
Annual Payroll
4
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Transportation and warehousing | 4 | 21.1% |
| Construction | 3 | 15.8% |
| Retail trade | 3 | 15.8% |
| Administrative and support and waste management and remediation services | 3 | 15.8% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 21530 vs 21555 →
ZIP 21530 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 15535
Clearville (15535)
2,203 residents
- 21555
Oldtown (21555)
1,936 residents
- 21530
Flintstone (21530)
1,591 residents
- 21766 700
Little Orleans (21766)
700 residents
- 17211 368
Artemas (17211)
368 residents
What this shows Among its immediate neighbors, ZIP 21530 ranks #3 by population - useful context the national average alone can't give.
ZIP 21530 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 21530
Flintstone (21530)
$63,542 median income
- 21766
Little Orleans (21766)
$62,054 median income
- 15535
Clearville (15535)
$57,212 median income
- 17211
Artemas (17211)
$53,750 median income
- 21555
Oldtown (21555)
$53,266 median income
What this shows By household income, ZIP 21530 ranks the highest of 5 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 21530, both outside MD so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (1,591 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Allegany County
Related Areas
Frequently Asked Questions
What county is ZIP code 21530 in?
ZIP code 21530 (Flintstone) is located in Allegany County, Maryland. Allegany County contains multiple ZIP codes, see the full list at /counties/allegany-md.
What is the population of ZIP code 21530?
ZIP code 21530 in Flintstone, MD has a population of 1,591 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 21530?
The median household income in ZIP 21530 is $63,542, which is 17% below the national average of $76,288.
What is the average home value in ZIP 21530?
The median home value in ZIP 21530 is $202,400, which is 27% below the national average of $278,155.
What is the demographic makeup of ZIP 21530?
The largest racial group in ZIP 21530 is White at 99.4%. Hispanic or Latino residents make up 1.7% of the population.
How many businesses are in ZIP code 21530?
ZIP code 21530 has 19 business establishments employing approximately 541 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 21530?
The top industries by establishment count in ZIP 21530 are: Transportation and warehousing (4), Construction (3), Retail trade (3). There are 4 industry sectors represented in total.
What is the education level in ZIP code 21530?
In ZIP code 21530, 60.2% of residents aged 25+ have a high school diploma or higher, and 21.2% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 21530?
In ZIP code 21530, approximately 82.7% of occupied housing units are owner-occupied and 17.3% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 21530?
The poverty rate in ZIP code 21530 is 18.5% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
Related
Take this with you
What to do with ZIP 21530's numbers, next.
- See how ZIP 21530 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Flintstone, MD ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.